//
//  main.m
//  KVO
//
//  Created by gzjd on 2017/5/7.
//  Copyright © 2017年 gzjd. All rights reserved.
//

#import <Foundation/Foundation.h>
#import "Person.h"
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // insert code here...
        NSLog(@"Hello, World!");
        Person *p=[[Person alloc]init];
        [p registerAsObserver];
        [[NSRunLoop currentRunLoop] run];
    }
    return 0;
}
